Battery Low Voltage Protection Circuit diagram - Simple Electronic Project





Diagram of Over-voltage Protection Circuit diagram


Components Needed for this Project:

You can get the components from any of the sites below:

  1. LM431 Voltage Regulator [See Buy Click Amazon]
  2. TIP42 Transistor [See Buy Click Amazon]
  3. 1k Ohm Resistor [See Buy Click Amazon]
  4. 15k Ohm Resistor [See Buy Click Amazon]
  5. 270 Ohm Resistor [See Buy Click Amazon]
  6. 10k Ohm Varible Resistor [See Buy Click Amazon]

*Please note: These are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!

Related Basic Electronic Mini Project Circuit Diagram:


Working Principle




Frequently asked questions

What is battery low voltage protection?

The Battery Protect disconnects the battery from non-essential loads before it is completely discharged (which would damage the battery) or before it has insufficient power supply left to crank the engine.

What is the lowest safe battery voltage?

For this reason, batteries that are fitted to show cars or vehicles that are rarely driven may require more frequent battery checks to ensure the voltage doesn't fall below 12.5 volts.

What 12v voltage is low?

For a 12-volt battery, low voltage could be considered anything below 11.5v. When the voltage drops below this level, the battery 12V may not be able to deliver sufficient power supply to start a vehicle or operate other electrical components.

What is low voltage for a Li-ion battery?

Lithium-Ion batteries should never be depleted to below their minimum voltage, 2.4V to 3V per cell power. Like all rechargeable batteries, Lithium-Ion batteries should be charged early and often system.

Can we use AC in low voltage?

If the voltage is too low, the air conditioner may struggle to start or run inefficiently, potentially causing damage to the unit system. In some cases, low voltage can trigger safety features that prevent the air conditioner from turning on at all low voltage Levels.

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